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Compression Fittings won't Screw into Components?

- - - - - water cooling compression fittings water blocks screw in fittings

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Mario Vale

Mario Vale


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Hi everyone,
I'm water cooling for the first time and I'm worried about having a leak, so before even completing the loop and filling it up with water I need some help with figuring out if these fittings are connected properly and if not, how do I tighten them?
Here is a link to an album with some pictures http://imgur.com/a/XZQ9b
The first image is an EK Water Blocks EK-ACF Fitting 13/19mm - Black screwed into a EVGA GeForce GTX 780 Dual Classified HydroCopper.  It is probably quite hard to tell from this photo, but this is the best I could do for now.  Is there meant to be a gap at the top, between the fitting and the card?
The second image with the green O-ring is a Bitspower G1/4 Matte Black Dual Rotary 45-Degree Compression Fitting-ID 1/2" OD 3/4" also into the GTX 780.  Should the O-ring be inside the graphics card slightly?
The third image is a compression fitting Bitspower Connection 1/4 Inch to 19 / 13mm - Carbon Black screwed into a Black Ice Nemesis GTX 360mm Radiator.  You can see that the O-ring is flush against the radiator, but the whole fitting isn't flush against the O-ring.
The fourth and fifth images are both connections of the Bitspower 1/4 Inch Adjustable Aquapipe II (22-31mm), I think this is the one that looks the most secure to me.
What I want to know is, do these look right and, if not, how do I screw the fittings properly into the components as I'm having a hard time screwing them in further?
Does anyone have any tips for screwing something into a rotary fitting, as obviously it will keep rotating unless it is clamped down?  I don't really want to clamp them with pliers as I fear I will be crushing the fitting.



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Some of them do look a bit suspect.


Do the fittings not have a recess to fit a spanner into? I'm sure some of my old ones did....


Been a while since i've done a build but iirc they are usually quite tight to get fully on.


Sounds silly, but have you tried taking them off and re-seating the connector??

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